多功能型天然高分子水处理剂的研制及其协同-竞争作用机制研究

Water treatment agents, including coagulants/flocculants, bacteriostatic/bactericidal agents, scale inhibitors, etc., play important roles in the field of water treatment. However, traditional water treatment agents usually bear only single-function, which results in a wide variety of agents, an increasing dose, complicated devices, and fussy operations. Thus, it is of great significance in scientific researches and practical applications to develop multi-function water treatment agents containing coagulation/flocculation, bacteriostasis/sterilization and scale inhibition. Moreover, natural polymer-based water treatment agents have been paid much more attentions recently for widespread availability, environmental friendliness, biodegradability, and prominent structural features. It is therefore significant to develop multi-function natural polymer-based water treatment agents. However, field operation data in this project including the application mechanisms are still very limited until now. In this current project, several series of multi-function natural polymer-based water treatment agents have been designed and manufactured by various chemical physical modification methods. From the viewpoint of the distinct morphologies of polymers with the flexible long chains in solutions, the multiplied levels of polymer structures, including short-range and long-range structure, corresponding to the repeating unit structure of polymer chain (type and chemical composition, etc.) and the long chain morphology (conformation and size in solution, etc.) respectively, have been studied in detail to explore the synergistic-competitive mechanisms systematically. Then the structure-activity relationship will be built. Accordingly, the performance of those water treatment agents would be significantly improved through controlling the materials’ structure. Finally, the necessary theoretical basises for the research and development of multi-function natural polymer-based water treatment agents have been provided. The current research results have important scientific and practical significance for improving the efficiency of water treatment and ensuring water security.

水处理药剂包括：混凝剂/絮凝剂、抑/灭菌剂和阻垢剂等，其在水处理领域里发挥着重要作用。然而传统水处理剂存在功能单一、投加量大、操作繁琐、不同药剂间可能互相抑制及易引发水体二次污染等问题。天然高分子具有绿色环保等重要特点，然而，迄今为止天然高分子水处理剂的开发与应用还十分有限，作用机制也很不清楚。针对上述问题，本课题拟采用多种化学物理改性手段，制备系列絮凝、抑/灭菌和减垢多功能天然高分子水处理剂。同时，基于高分子特殊柔性长链结构特征，从其近程（特征功能基团等）及远程结构（溶液中结构形态等）两方面，系统研究其协同-竞争作用机制，建立构效关系，实现通过调控材料分子结构而改善水处理剂的应用性能，为多功能天然高分子水处理剂的研发提供必要的理论依据。研究结果对于提高水处理效率保障用水安全具有重要的科学和现实意义。

水处理药剂包括：混凝剂/絮凝剂、抑/灭菌剂和阻垢剂等，其在水处理领域里发挥着重要作用。然而传统水处理剂存在功能单一、投加量大、操作繁琐、不同药剂间可能互相抑制及易引发水体二次污染等问题。天然高分子具有绿色环保等重要特点，然而，迄今为止天然高分子水处理剂的开发与应用还十分有限，作用机制也很不清楚。针对上述问题，本课题采用多种化学物理改性手段，制备系列絮凝、抑/灭菌和减垢多功能天然高分子水处理剂。同时，基于高分子特殊柔性长链结构特征，从其近程（特征功能基团等）及远程结构（溶液中结构形态等）两方面，系统研究其协同-竞争作用机制，建立构效关系，实现通过调控材料分子结构而改善水处理剂的应用性能，为多功能天然高分子水处理剂的研发提供必要的理论依据。研究结果对于提高水处理效率保障用水安全具有重要的科学和现实意义。